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Commercialized conductive slurry consisting of polyacrylamide (PAM) and two kinds of carbon black was coated on the surface of sulfur cathode. The hybrid PAM/C coating not only physically blocks but also chemically anchors polysulfides within the cathode, confining their out-diffusion and shuttle. Besides, the flexible and highly-conductive coating layer buffers volume change of the cathode during...
Concentrated lithium salt-monoglyme complex was used as an electrolyte candidate of lithium-sulfur (Li-S) batteries. It is found that the limited content of monoglyme suppresses the solubility and shuttle of polysulfides in the electrolyte. Then 1,1,2,2-tetrafluoroethyl 2,2,2-trifluoroethyl ether (TFTFE) was selected as a second solvent of the complex, and the effect of adding TFTFE on electrolyte...
Fluorinated ether of ethyl 1,1,2,2-tetrafluoroethyl ether (ETFE) was selected as electrolyte solvent for lithium/sulfur battery, and the influence of ETFE in electrolyte on cell properties was first investigated. The enhanced stability of electrolyte/anode interface and improved electrochemical performances (cycling, rate and self-discharging) of the Li/S cell are presented by using ETFE-containing...
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